US 5,347,985 A · Constant temperature solar water heater switch

Abstract

A constant temperature solar water heater switch, for operating a solar water heating element, using an electrical motor, and a water pump, the water pump pumping water from a water source to the solar water heating element, which uses the solar rays to heat the water, and then returning the water to the source. This system matches a solar PV panel to a compatible relay, using a variable resistance to adjust for desired operation of the system, in order to shut the system down when the sun is not shining directly, and sufficiently to heat the water in the solar heater element, in order to prevent cool water to re-enter the source. A manual electrical overide switch is provided for manual operation of the system, for manual operation, or, for preventative maintenance.

Claims3

Dependent claims

A constant temperature solar water heater switch control apparatus, for using the solar rays of the sun to control a relay, said relay directing 110 V commercial power to a motor-pump apparatus, and said motor-pump apparatus pumping water through a solar PV water heating system, said water to be solar heated, and pumped through a using apparatus, comprising:

a substantially square box type enclosure, said enclosure having at least one side open,
a substantially square cover, said cover removeably covering the open side of said enclosure,
a solar PV panel
a relay, said relay having sufficient contacts to switch 110 V commercial power to a motor-pump apparatus,
a variable resistor, said resistor having capability to compensate for various 110V load requirements of said relay,
a manual over-ride test switch, said over-ride switch to provide commercial power to said motor-pump apparatus for maintenance use.

3 more elements

Dependencies are inferred from the claim text.

Constant temperature solar water heater switch

Life of this patent

Constant temperature solar water heater switch

Life of this patent

Abstract

Claims3